diff options
Diffstat (limited to 'drivers/hid/hid-wiimote-modules.c')
| -rw-r--r-- | drivers/hid/hid-wiimote-modules.c | 2086 |
1 files changed, 2086 insertions, 0 deletions
diff --git a/drivers/hid/hid-wiimote-modules.c b/drivers/hid/hid-wiimote-modules.c new file mode 100644 index 000000000000..2e7d644dba18 --- /dev/null +++ b/drivers/hid/hid-wiimote-modules.c @@ -0,0 +1,2086 @@ +/* + * Device Modules for Nintendo Wii / Wii U HID Driver + * Copyright (c) 2011-2013 David Herrmann <dh.herrmann@gmail.com> + */ + +/* + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the Free + * Software Foundation; either version 2 of the License, or (at your option) + * any later version. + */ + +/* + * Wiimote Modules + * Nintendo devices provide different peripherals and many new devices lack + * initial features like the IR camera. Therefore, each peripheral device is + * implemented as an independent module and we probe on each device only the + * modules for the hardware that really is available. + * + * Module registration is sequential. Unregistration is done in reverse order. + * After device detection, the needed modules are loaded. Users can trigger + * re-detection which causes all modules to be unloaded and then reload the + * modules for the new detected device. + * + * wdata->input is a shared input device. It is always initialized prior to + * module registration. If at least one registered module is marked as + * WIIMOD_FLAG_INPUT, then the input device will get registered after all + * modules were registered. + * Please note that it is unregistered _before_ the "remove" callbacks are + * called. This guarantees that no input interaction is done, anymore. However, + * the wiimote core keeps a reference to the input device so it is freed only + * after all modules were removed. It is safe to send events to unregistered + * input devices. + */ + +#include <linux/device.h> +#include <linux/hid.h> +#include <linux/input.h> +#include <linux/spinlock.h> +#include "hid-wiimote.h" + +/* + * Keys + * The initial Wii Remote provided a bunch of buttons that are reported as + * part of the core protocol. Many later devices dropped these and report + * invalid data in the core button reports. Load this only on devices which + * correctly send button reports. + * It uses the shared input device. + */ + +static const __u16 wiimod_keys_map[] = { + KEY_LEFT, /* WIIPROTO_KEY_LEFT */ + KEY_RIGHT, /* WIIPROTO_KEY_RIGHT */ + KEY_UP, /* WIIPROTO_KEY_UP */ + KEY_DOWN, /* WIIPROTO_KEY_DOWN */ + KEY_NEXT, /* WIIPROTO_KEY_PLUS */ + KEY_PREVIOUS, /* WIIPROTO_KEY_MINUS */ + BTN_1, /* WIIPROTO_KEY_ONE */ + BTN_2, /* WIIPROTO_KEY_TWO */ + BTN_A, /* WIIPROTO_KEY_A */ + BTN_B, /* WIIPROTO_KEY_B */ + BTN_MODE, /* WIIPROTO_KEY_HOME */ +}; + +static void wiimod_keys_in_keys(struct wiimote_data *wdata, const __u8 *keys) +{ + input_report_key(wdata->input, wiimod_keys_map[WIIPROTO_KEY_LEFT], + !!(keys[0] & 0x01)); + input_report_key(wdata->input, wiimod_keys_map[WIIPROTO_KEY_RIGHT], + !!(keys[0] & 0x02)); + input_report_key(wdata->input, wiimod_keys_map[WIIPROTO_KEY_DOWN], + !!(keys[0] & 0x04)); + input_report_key(wdata->input, wiimod_keys_map[WIIPROTO_KEY_UP], + !!(keys[0] & 0x08)); + input_report_key(wdata->input, wiimod_keys_map[WIIPROTO_KEY_PLUS], + !!(keys[0] & 0x10)); + input_report_key(wdata->input, wiimod_keys_map[WIIPROTO_KEY_TWO], + !!(keys[1] & 0x01)); + input_report_key(wdata->input, wiimod_keys_map[WIIPROTO_KEY_ONE], + !!(keys[1] & 0x02)); + input_report_key(wdata->input, wiimod_keys_map[WIIPROTO_KEY_B], + !!(keys[1] & 0x04)); + input_report_key(wdata->input, wiimod_keys_map[WIIPROTO_KEY_A], + !!(keys[1] & 0x08)); + input_report_key(wdata->input, wiimod_keys_map[WIIPROTO_KEY_MINUS], + !!(keys[1] & 0x10)); + input_report_key(wdata->input, wiimod_keys_map[WIIPROTO_KEY_HOME], + !!(keys[1] & 0x80)); + input_sync(wdata->input); +} + +static int wiimod_keys_probe(const struct wiimod_ops *ops, + struct wiimote_data *wdata) +{ + unsigned int i; + + set_bit(EV_KEY, wdata->input->evbit); + for (i = 0; i < WIIPROTO_KEY_COUNT; ++i) + set_bit(wiimod_keys_map[i], wdata->input->keybit); + + return 0; +} + +static const struct wiimod_ops wiimod_keys = { + .flags = WIIMOD_FLAG_INPUT, + .arg = 0, + .probe = wiimod_keys_probe, + .remove = NULL, + .in_keys = wiimod_keys_in_keys, +}; + +/* + * Rumble + * Nearly all devices provide a rumble feature. A small motor for + * force-feedback effects. We provide an FF_RUMBLE memless ff device on the + * shared input device if this module is loaded. + * The rumble motor is controlled via a flag on almost every output report so + * the wiimote core handles the rumble flag. But if a device doesn't provide + * the rumble motor, this flag shouldn't be set. + */ + +static int wiimod_rumble_play(struct input_dev *dev, void *data, + struct ff_effect *eff) +{ + struct wiimote_data *wdata = input_get_drvdata(dev); + __u8 value; + unsigned long flags; + + /* + * The wiimote supports only a single rumble motor so if any magnitude + * is set to non-zero then we start the rumble motor. If both are set to + * zero, we stop the rumble motor. + */ + + if (eff->u.rumble.strong_magnitude || eff->u.rumble.weak_magnitude) + value = 1; + else + value = 0; + + spin_lock_irqsave(&wdata->state.lock, flags); + wiiproto_req_rumble(wdata, value); + spin_unlock_irqrestore(&wdata->state.lock, flags); + + return 0; +} + +static int wiimod_rumble_probe(const struct wiimod_ops *ops, + struct wiimote_data *wdata) +{ + set_bit(FF_RUMBLE, wdata->input->ffbit); + if (input_ff_create_memless(wdata->input, NULL, wiimod_rumble_play)) + return -ENOMEM; + + return 0; +} + +static void wiimod_rumble_remove(const struct wiimod_ops *ops, + struct wiimote_data *wdata) +{ + unsigned long flags; + + spin_lock_irqsave(&wdata->state.lock, flags); + wiiproto_req_rumble(wdata, 0); + spin_unlock_irqrestore(&wdata->state.lock, flags); +} + +static const struct wiimod_ops wiimod_rumble = { + .flags = WIIMOD_FLAG_INPUT, + .arg = 0, + .probe = wiimod_rumble_probe, + .remove = wiimod_rumble_remove, +}; + +/* + * Battery + * 1 byte of battery capacity information is sent along every protocol status + * report. The wiimote core caches it but we try to update it on every + * user-space request. + * This is supported by nearly every device so it's almost always enabled. + */ + +static enum power_supply_property wiimod_battery_props[] = { + POWER_SUPPLY_PROP_CAPACITY, + POWER_SUPPLY_PROP_SCOPE, +}; + +static int wiimod_battery_get_property(struct power_supply *psy, + enum power_supply_property psp, + union power_supply_propval *val) +{ + struct wiimote_data *wdata = container_of(psy, struct wiimote_data, + battery); + int ret = 0, state; + unsigned long flags; + + if (psp == POWER_SUPPLY_PROP_SCOPE) { + val->intval = POWER_SUPPLY_SCOPE_DEVICE; + return 0; + } else if (psp != POWER_SUPPLY_PROP_CAPACITY) { + return -EINVAL; + } + + ret = wiimote_cmd_acquire(wdata); + if (ret) + return ret; + + spin_lock_irqsave(&wdata->state.lock, flags); + wiimote_cmd_set(wdata, WIIPROTO_REQ_SREQ, 0); + wiiproto_req_status(wdata); + spin_unlock_irqrestore(&wdata->state.lock, flags); + + wiimote_cmd_wait(wdata); + wiimote_cmd_release(wdata); + + spin_lock_irqsave(&wdata->state.lock, flags); + state = wdata->state.cmd_battery; + spin_unlock_irqrestore(&wdata->state.lock, flags); + + val->intval = state * 100 / 255; + return ret; +} + +static int wiimod_battery_probe(const struct wiimod_ops *ops, + struct wiimote_data *wdata) +{ + int ret; + + wdata->battery.properties = wiimod_battery_props; + wdata->battery.num_properties = ARRAY_SIZE(wiimod_battery_props); + wdata->battery.get_property = wiimod_battery_get_property; + wdata->battery.type = POWER_SUPPLY_TYPE_BATTERY; + wdata->battery.use_for_apm = 0; + wdata->battery.name = kasprintf(GFP_KERNEL, "wiimote_battery_%s", + wdata->hdev->uniq); + if (!wdata->battery.name) + return -ENOMEM; + + ret = power_supply_register(&wdata->hdev->dev, &wdata->battery); + if (ret) { + hid_err(wdata->hdev, "cannot register battery device\n"); + goto err_free; + } + + power_supply_powers(&wdata->battery, &wdata->hdev->dev); + return 0; + +err_free: + kfree(wdata->battery.name); + wdata->battery.name = NULL; + return ret; +} + +static void wiimod_battery_remove(const struct wiimod_ops *ops, + struct wiimote_data *wdata) +{ + if (!wdata->battery.name) + return; + + power_supply_unregister(&wdata->battery); + kfree(wdata->battery.name); + wdata->battery.name = NULL; +} + +static const struct wiimod_ops wiimod_battery = { + .flags = 0, + .arg = 0, + .probe = wiimod_battery_probe, + .remove = wiimod_battery_remove, +}; + +/* + * LED + * 0 to 4 player LEDs are supported by devices. The "arg" field of the + * wiimod_ops structure specifies which LED this module controls. This allows + * to register a limited number of LEDs. + * State is managed by wiimote core. + */ + +static enum led_brightness wiimod_led_get(struct led_classdev *led_dev) +{ + struct wiimote_data *wdata; + struct device *dev = led_dev->dev->parent; + int i; + unsigned long flags; + bool value = false; + + wdata = hid_get_drvdata(container_of(dev, struct hid_device, dev)); + + for (i = 0; i < 4; ++i) { + if (wdata->leds[i] == led_dev) { + spin_lock_irqsave(&wdata->state.lock, flags); + value = wdata->state.flags & WIIPROTO_FLAG_LED(i + 1); + spin_unlock_irqrestore(&wdata->state.lock, flags); + break; + } + } + + return value ? LED_FULL : LED_OFF; +} + +static void wiimod_led_set(struct led_classdev *led_dev, + enum led_brightness value) +{ + struct wiimote_data *wdata; + struct device *dev = led_dev->dev->parent; + int i; + unsigned long flags; + __u8 state, flag; + + wdata = hid_get_drvdata(container_of(dev, struct hid_device, dev)); + + for (i = 0; i < 4; ++i) { + if (wdata->leds[i] == led_dev) { + flag = WIIPROTO_FLAG_LED(i + 1); + spin_lock_irqsave(&wdata->state.lock, flags); + state = wdata->state.flags; + if (value == LED_OFF) + wiiproto_req_leds(wdata, state & ~flag); + else + wiiproto_req_leds(wdata, state | flag); + spin_unlock_irqrestore(&wdata->state.lock, flags); + break; + } + } +} + +static int wiimod_led_probe(const struct wiimod_ops *ops, + struct wiimote_data *wdata) +{ + struct device *dev = &wdata->hdev->dev; + size_t namesz = strlen(dev_name(dev)) + 9; + struct led_classdev *led; + unsigned long flags; + char *name; + int ret; + + led = kzalloc(sizeof(struct led_classdev) + namesz, GFP_KERNEL); + if (!led) + return -ENOMEM; + + name = (void*)&led[1]; + snprintf(name, namesz, "%s:blue:p%lu", dev_name(dev), ops->arg); + led->name = name; + led->brightness = 0; + led->max_brightness = 1; + led->brightness_get = wiimod_led_get; + led->brightness_set = wiimod_led_set; + + wdata->leds[ops->arg] = led; + ret = led_classdev_register(dev, led); + if (ret) + goto err_free; + + /* enable LED1 to stop initial LED-blinking */ + if (ops->arg == 0) { + spin_lock_irqsave(&wdata->state.lock, flags); + wiiproto_req_leds(wdata, WIIPROTO_FLAG_LED1); + spin_unlock_irqrestore(&wdata->state.lock, flags); + } + + return 0; + +err_free: + wdata->leds[ops->arg] = NULL; + kfree(led); + return ret; +} + +static void wiimod_led_remove(const struct wiimod_ops *ops, + struct wiimote_data *wdata) +{ + if (!wdata->leds[ops->arg]) + return; + + led_classdev_unregister(wdata->leds[ops->arg]); + kfree(wdata->leds[ops->arg]); + wdata->leds[ops->arg] = NULL; +} + +static const struct wiimod_ops wiimod_leds[4] = { + { + .flags = 0, + .arg = 0, + .probe = wiimod_led_probe, + .remove = wiimod_led_remove, + }, + { + .flags = 0, + .arg = 1, + .probe = wiimod_led_probe, + .remove = wiimod_led_remove, + }, + { + .flags = 0, + .arg = 2, + .probe = wiimod_led_probe, + .remove = wiimod_led_remove, + }, + { + .flags = 0, + .arg = 3, + .probe = wiimod_led_probe, + .remove = wiimod_led_remove, + }, +}; + +/* + * Accelerometer + * 3 axis accelerometer data is part of nearly all DRMs. If not supported by a + * device, it's mostly cleared to 0. This module parses this data and provides + * it via a separate input device. + */ + +static void wiimod_accel_in_accel(struct wiimote_data *wdata, + const __u8 *accel) +{ + __u16 x, y, z; + + if (!(wdata->state.flags & WIIPROTO_FLAG_ACCEL)) + return; + + /* + * payload is: BB BB XX YY ZZ + * Accelerometer data is encoded into 3 10bit values. XX, YY and ZZ + * contain the upper 8 bits of each value. The lower 2 bits are + * contained in the buttons data BB BB. + * Bits 6 and 7 of the first buttons byte BB is the lower 2 bits of the + * X accel value. Bit 5 of the second buttons byte is the 2nd bit of Y + * accel value and bit 6 is the second bit of the Z value. + * The first bit of Y and Z values is not available and always set to 0. + * 0x200 is returned on no movement. + */ + + x = accel[2] << 2; + y = accel[3] << 2; + z = accel[4] << 2; + + x |= (accel[0] >> 5) & 0x3; + y |= (accel[1] >> 4) & 0x2; + z |= (accel[1] >> 5) & 0x2; + + input_report_abs(wdata->accel, ABS_RX, x - 0x200); + input_report_abs(wdata->accel, ABS_RY, y - 0x200); + input_report_abs(wdata->accel, ABS_RZ, z - 0x200); + input_sync(wdata->accel); +} + +static int wiimod_accel_open(struct input_dev *dev) +{ + struct wiimote_data *wdata = input_get_drvdata(dev); + unsigned long flags; + + spin_lock_irqsave(&wdata->state.lock, flags); + wiiproto_req_accel(wdata, true); + spin_unlock_irqrestore(&wdata->state.lock, flags); + + return 0; +} + +static void wiimod_accel_close(struct input_dev *dev) +{ + struct wiimote_data *wdata = input_get_drvdata(dev); + unsigned long flags; + + spin_lock_irqsave(&wdata->state.lock, flags); + wiiproto_req_accel(wdata, false); + spin_unlock_irqrestore(&wdata->state.lock, flags); +} + +static int wiimod_accel_probe(const struct wiimod_ops *ops, + struct wiimote_data *wdata) +{ + int ret; + + wdata->accel = input_allocate_device(); + if (!wdata->accel) + return -ENOMEM; + + input_set_drvdata(wdata->accel, wdata); + wdata->accel->open = wiimod_accel_open; + wdata->accel->close = wiimod_accel_close; + wdata->accel->dev.parent = &wdata->hdev->dev; + wdata->accel->id.bustype = wdata->hdev->bus; + wdata->accel->id.vendor = wdata->hdev->vendor; + wdata->accel->id.product = wdata->hdev->product; + wdata->accel->id.version = wdata->hdev->version; + wdata->accel->name = WIIMOTE_NAME " Accelerometer"; + + set_bit(EV_ABS, wdata->accel->evbit); + set_bit(ABS_RX, wdata->accel->absbit); + set_bit(ABS_RY, wdata->accel->absbit); + set_bit(ABS_RZ, wdata->accel->absbit); + input_set_abs_params(wdata->accel, ABS_RX, -500, 500, 2, 4); + input_set_abs_params(wdata->accel, ABS_RY, -500, 500, 2, 4); + input_set_abs_params(wdata->accel, ABS_RZ, -500, 500, 2, 4); + + ret = input_register_device(wdata->accel); + if (ret) { + hid_err(wdata->hdev, "cannot register input device\n"); + goto err_free; + } + + return 0; + +err_free: + input_free_device(wdata->accel); + wdata->accel = NULL; + return ret; +} + +static void wiimod_accel_remove(const struct wiimod_ops *ops, + struct wiimote_data *wdata) +{ + if (!wdata->accel) + return; + + input_unregister_device(wdata->accel); + wdata->accel = NULL; +} + +static const struct wiimod_ops wiimod_accel = { + .flags = 0, + .arg = 0, + .probe = wiimod_accel_probe, + .remove = wiimod_accel_remove, + .in_accel = wiimod_accel_in_accel, +}; + +/* + * IR Cam + * Up to 4 IR sources can be tracked by a normal Wii Remote. The IR cam needs + * to be initialized with a fairly complex procedure and consumes a lot of + * power. Therefore, as long as no application uses the IR input device, it is + * kept offline. + * Nearly no other device than the normal Wii Remotes supports the IR cam so + * you can disable this module for these devices. + */ + +static void wiimod_ir_in_ir(struct wiimote_data *wdata, const __u8 *ir, + bool packed, unsigned int id) +{ + __u16 x, y; + __u8 xid, yid; + bool sync = false; + + if (!(wdata->state.flags & WIIPROTO_FLAGS_IR)) + return; + + switch (id) { + case 0: + xid = ABS_HAT0X; + yid = ABS_HAT0Y; + break; + case 1: + xid = ABS_HAT1X; + yid = ABS_HAT1Y; + break; + case 2: + xid = ABS_HAT2X; + yid = ABS_HAT2Y; + break; + case 3: + xid = ABS_HAT3X; + yid = ABS_HAT3Y; + sync = true; + break; + default: + return; + } + + /* + * Basic IR data is encoded into 3 bytes. The first two bytes are the + * lower 8 bit of the X/Y data, the 3rd byte contains the upper 2 bits + * of both. + * If data is packed, then the 3rd byte is put first and slightly + * reordered. This allows to interleave packed and non-packed data to + * have two IR sets in 5 bytes instead of 6. + * The resulting 10bit X/Y values are passed to the ABS_HAT? input dev. + */ + + if (packed) { + x = ir[1] | ((ir[0] & 0x03) << 8); + y = ir[2] | ((ir[0] & 0x0c) << 6); + } else { + x = ir[0] | ((ir[2] & 0x30) << 4); + y = ir[1] | ((ir[2] & 0xc0) << 2); + } + + input_report_abs(wdata->ir, xid, x); + input_report_abs(wdata->ir, yid, y); + + if (sync) + input_sync(wdata->ir); +} + +static int wiimod_ir_change(struct wiimote_data *wdata, __u16 mode) +{ + int ret; + unsigned long flags; + __u8 format = 0; + static const __u8 data_enable[] = { 0x01 }; + static const __u8 data_sens1[] = { 0x02, 0x00, 0x00, 0x71, 0x01, + 0x00, 0xaa, 0x00, 0x64 }; + static const __u8 data_sens2[] = { 0x63, 0x03 }; + static const __u8 data_fin[] = { 0x08 }; + + spin_lock_irqsave(&wdata->state.lock, flags); + + if (mode == (wdata->state.flags & WIIPROTO_FLAGS_IR)) { + spin_unlock_irqrestore(&wdata->state.lock, flags); + return 0; + } + + if (mode == 0) { + wdata->state.flags &= ~WIIPROTO_FLAGS_IR; + wiiproto_req_ir1(wdata, 0); + wiiproto_req_ir2(wdata, 0); + wiiproto_req_drm(wdata, WIIPROTO_REQ_NULL); + spin_unlock_irqrestore(&wdata->state.lock, flags); + return 0; + } + + spin_unlock_irqrestore(&wdata->state.lock, flags); + + ret = wiimote_cmd_acquire(wdata); + if (ret) + return ret; + + /* send PIXEL CLOCK ENABLE cmd first */ + spin_lock_irqsave(&wdata->state.lock, flags); + wiimote_cmd_set(wdata, WIIPROTO_REQ_IR1, 0); + wiiproto_req_ir1(wdata, 0x06); + spin_unlock_irqrestore(&wdata->state.lock, flags); + + ret = wiimote_cmd_wait(wdata); + if (ret) + goto unlock; + if (wdata->state.cmd_err) { + ret = -EIO; + goto unlock; + } + + /* enable IR LOGIC */ + spin_lock_irqsave(&wdata->state.lock, flags); + wiimote_cmd_set(wdata, WIIPROTO_REQ_IR2, 0); + wiiproto_req_ir2(wdata, 0x06); + spin_unlock_irqrestore(&wdata->state.lock, flags); + + ret = wiimote_cmd_wait(wdata); + if (ret) + goto unlock; + if (wdata->state.cmd_err) { + ret = -EIO; + goto unlock; + } + + /* enable IR cam but do not make it send data, yet */ + ret = wiimote_cmd_write(wdata, 0xb00030, data_enable, + sizeof(data_enable)); + if (ret) + goto unlock; + + /* write first sensitivity block */ + ret = wiimote_cmd_write(wdata, 0xb00000, data_sens1, + sizeof(data_sens1)); + if (ret) + goto unlock; + + /* write second sensitivity block */ + ret = wiimote_cmd_write(wdata, 0xb0001a, data_sens2, + sizeof(data_sens2)); + if (ret) + goto unlock; + + /* put IR cam into desired state */ + switch (mode) { + case WIIPROTO_FLAG_IR_FULL: + format = 5; + break; + case WIIPROTO_FLAG_IR_EXT: + format = 3; + break; + case WIIPROTO_FLAG_IR_BASIC: + format = 1; + break; + } + ret = wiimote_cmd_write(wdata, 0xb00033, &format, sizeof(format)); + if (ret) + goto unlock; + + /* make IR cam send data */ + ret = wiimote_cmd_write(wdata, 0xb00030, data_fin, sizeof(data_fin)); + if (ret) + goto unlock; + + /* request new DRM mode compatible to IR mode */ + spin_lock_irqsave(&wdata->state.lock, flags); + wdata->state.flags &= ~WIIPROTO_FLAGS_IR; + wdata->state.flags |= mode & WIIPROTO_FLAGS_IR; + wiiproto_req_drm(wdata, WIIPROTO_REQ_NULL); + spin_unlock_irqrestore(&wdata->state.lock, flags); + +unlock: + wiimote_cmd_release(wdata); + return ret; +} + +static int wiimod_ir_open(struct input_dev *dev) +{ + struct wiimote_data *wdata = input_get_drvdata(dev); + + return wiimod_ir_change(wdata, WIIPROTO_FLAG_IR_BASIC); +} + +static void wiimod_ir_close(struct input_dev *dev) +{ + struct wiimote_data *wdata = input_get_drvdata(dev); + + wiimod_ir_change(wdata, 0); +} + +static int wiimod_ir_probe(const struct wiimod_ops *ops, + struct wiimote_data *wdata) +{ + int ret; + + wdata->ir = input_allocate_device(); + if (!wdata->ir) + return -ENOMEM; + + input_set_drvdata(wdata->ir, wdata); + wdata->ir->open = wiimod_ir_open; + wdata->ir->close = wiimod_ir_close; + wdata->ir->dev.parent = &wdata->hdev->dev; + wdata->ir->id.bustype = wdata->hdev->bus; + wdata->ir->id.vendor = wdata->hdev->vendor; + wdata->ir->id.product = wdata->hdev->product; + wdata->ir->id.version = wdata->hdev->version; + wdata->ir->name = WIIMOTE_NAME " IR"; + + set_bit(EV_ABS, wdata->ir->evbit); + set_bit(ABS_HAT0X, wdata->ir->absbit); + set_bit(ABS_HAT0Y, wdata->ir->absbit); + set_bit(ABS_HAT1X, wdata->ir->absbit); + set_bit(ABS_HAT1Y, wdata->ir->absbit); + set_bit(ABS_HAT2X, wdata->ir->absbit); + set_bit(ABS_HAT2Y, wdata->ir->absbit); + set_bit(ABS_HAT3X, wdata->ir->absbit); + set_bit(ABS_HAT3Y, wdata->ir->absbit); + input_set_abs_params(wdata->ir, ABS_HAT0X, 0, 1023, 2, 4); + input_set_abs_params(wdata->ir, ABS_HAT0Y, 0, 767, 2, 4); + input_set_abs_params(wdata->ir, ABS_HAT1X, 0, 1023, 2, 4); + input_set_abs_params(wdata->ir, ABS_HAT1Y, 0, 767, 2, 4); + input_set_abs_params(wdata->ir, ABS_HAT2X, 0, 1023, 2, 4); + input_set_abs_params(wdata->ir, ABS_HAT2Y, 0, 767, 2, 4); + input_set_abs_params(wdata->ir, ABS_HAT3X, 0, 1023, 2, 4); + input_set_abs_params(wdata->ir, ABS_HAT3Y, 0, 767, 2, 4); + + ret = input_register_device(wdata->ir); + if (ret) { + hid_err(wdata->hdev, "cannot register input device\n"); + goto err_free; + } + + return 0; + +err_free: + input_free_device(wdata->ir); + wdata->ir = NULL; + return ret; +} + +static void wiimod_ir_remove(const struct wiimod_ops *ops, + struct wiimote_data *wdata) +{ + if (!wdata->ir) + return; + + input_unregister_device(wdata->ir); + wdata->ir = NULL; +} + +static const struct wiimod_ops wiimod_ir = { + .flags = 0, + .arg = 0, + .probe = wiimod_ir_probe, + .remove = wiimod_ir_remove, + .in_ir = wiimod_ir_in_ir, +}; + +/* + * Nunchuk Extension + * The Nintendo Wii Nunchuk was the first official extension published by + * Nintendo. It provides two additional keys and a separate accelerometer. It + * can be hotplugged to standard Wii Remotes. + */ + +enum wiimod_nunchuk_keys { + WIIMOD_NUNCHUK_KEY_C, + WIIMOD_NUNCHUK_KEY_Z, + WIIMOD_NUNCHUK_KEY_NUM, +}; + +static const __u16 wiimod_nunchuk_map[] = { + BTN_C, /* WIIMOD_NUNCHUK_KEY_C */ + BTN_Z, /* WIIMOD_NUNCHUK_KEY_Z */ +}; + +static void wiimod_nunchuk_in_ext(struct wiimote_data *wdata, const __u8 *ext) +{ + __s16 x, y, z, bx, by; + + /* Byte | 8 7 | 6 5 | 4 3 | 2 | 1 | + * -----+----------+---------+---------+----+-----+ + * 1 | Button X <7:0> | + * 2 | Button Y <7:0> | + * -----+----------+---------+---------+----+-----+ + * 3 | Speed X <9:2> | + * 4 | Speed Y <9:2> | + * 5 | Speed Z <9:2> | + * -----+----------+---------+---------+----+-----+ + * 6 | Z <1:0> | Y <1:0> | X <1:0> | BC | BZ | + * -----+----------+---------+---------+----+-----+ + * Button X/Y is the analog stick. Speed X, Y and Z are the + * accelerometer data in the same format as the wiimote's accelerometer. + * The 6th byte contains the LSBs of the accelerometer data. + * BC and BZ are the C and Z buttons: 0 means pressed + * + * If reported interleaved with motionp, then the layout changes. The + * 5th and 6th byte changes to: + * -----+-----------------------------------+-----+ + * 5 | Speed Z <9:3> | EXT | + * -----+--------+-----+-----+----+----+----+-----+ + * 6 |Z <2:1> |Y <1>|X <1>| BC | BZ | 0 | 0 | + * -----+--------+-----+-----+----+----+----+-----+ + * All three accelerometer values lose their LSB. The other data is + * still available but slightly moved. + * + * Center data for button values is 128. Center value for accelerometer + * values it 512 / 0x200 + */ + + bx = ext[0]; + by = ext[1]; + bx -= 128; + by -= 128; + + x = ext[2] << 2; + y = ext[3] << 2; + z = ext[4] << 2; + + if (wdata->state.flags & WIIPROTO_FLAG_MP_ACTIVE) { + x |= (ext[5] >> 3) & 0x02; + y |= (ext[5] >> 4) & 0x02; + z &= ~0x4; + z |= (ext[5] >> 5) & 0x06; + } else { + x |= (ext[5] >> 2) & 0x03; + y |= (ext[5] >> 4) & 0x03; + z |= (ext[5] >> 6) & 0x03; + } + + x -= 0x200; + y -= 0x200; + z -= 0x200; + + input_report_abs(wdata->extension.input, ABS_HAT0X, bx); + input_report_abs(wdata->extension.input, ABS_HAT0Y, by); + + input_report_abs(wdata->extension.input, ABS_RX, x); + input_report_abs(wdata->extension.input, ABS_RY, y); + input_report_abs(wdata->extension.input, ABS_RZ, z); + + if (wdata->state.flags & WIIPROTO_FLAG_MP_ACTIVE) { + input_report_key(wdata->extension.input, + wiimod_nunchuk_map[WIIMOD_NUNCHUK_KEY_Z], + !(ext[5] & 0x04)); + input_report_key(wdata->extension.input, + wiimod_nunchuk_map[WIIMOD_NUNCHUK_KEY_C], + !(ext[5] & 0x08)); + } else { + input_report_key(wdata->extension.input, + wiimod_nunchuk_map[WIIMOD_NUNCHUK_KEY_Z], + !(ext[5] & 0x01)); + input_report_key(wdata->extension.input, + wiimod_nunchuk_map[WIIMOD_NUNCHUK_KEY_C], + !(ext[5] & 0x02)); + } + + input_sync(wdata->extension.input); +} + +static int wiimod_nunchuk_open(struct input_dev *dev) +{ + struct wiimote_data *wdata = input_get_drvdata(dev); + unsigned long flags; + + spin_lock_irqsave(&wdata->state.lock, flags); + wdata->state.flags |= WIIPROTO_FLAG_EXT_USED; + wiiproto_req_drm(wdata, WIIPROTO_REQ_NULL); + spin_unlock_irqrestore(&wdata->state.lock, flags); + + return 0; +} + +static void wiimod_nunchuk_close(struct input_dev *dev) +{ + struct wiimote_data *wdata = input_get_drvdata(dev); + unsigned long flags; + + spin_lock_irqsave(&wdata->state.lock, flags); + wdata->state.flags &= ~WIIPROTO_FLAG_EXT_USED; + wiiproto_req_drm(wdata, WIIPROTO_REQ_NULL); + spin_unlock_irqrestore(&wdata->state.lock, flags); +} + +static int wiimod_nunchuk_probe(const struct wiimod_ops *ops, + struct wiimote_data *wdata) +{ + int ret, i; + + wdata->extension.input = input_allocate_device(); + if (!wdata->extension.input) + return -ENOMEM; + + input_set_drvdata(wdata->extension.input, wdata); + wdata->extension.input->open = wiimod_nunchuk_open; + wdata->extension.input->close = wiimod_nunchuk_close; + wdata->extension.input->dev.parent = &wdata->hdev->dev; + wdata->extension.input->id.bustype = wdata->hdev->bus; + wdata->extension.input->id.vendor = wdata->hdev->vendor; + wdata->extension.input->id.product = wdata->hdev->product; + wdata->extension.input->id.version = wdata->hdev->version; + wdata->extension.input->name = WIIMOTE_NAME " Nunchuk"; + + set_bit(EV_KEY, wdata->extension.input->evbit); + for (i = 0; i < WIIMOD_NUNCHUK_KEY_NUM; ++i) + set_bit(wiimod_nunchuk_map[i], + wdata->extension.input->keybit); + + set_bit(EV_ABS, wdata->extension.input->evbit); + set_bit(ABS_HAT0X, wdata->extension.input->absbit); + set_bit(ABS_HAT0Y, wdata->extension.input->absbit); + input_set_abs_params(wdata->extension.input, + ABS_HAT0X, -120, 120, 2, 4); + input_set_abs_params(wdata->extension.input, + ABS_HAT0Y, -120, 120, 2, 4); + set_bit(ABS_RX, wdata->extension.input->absbit); + set_bit(ABS_RY, wdata->extension.input->absbit); + set_bit(ABS_RZ, wdata->extension.input->absbit); + input_set_abs_params(wdata->extension.input, + ABS_RX, -500, 500, 2, 4); + input_set_abs_params(wdata->extension.input, + ABS_RY, -500, 500, 2, 4); + input_set_abs_params(wdata->extension.input, + ABS_RZ, -500, 500, 2, 4); + + ret = input_register_device(wdata->extension.input); + if (ret) + goto err_free; + + return 0; + +err_free: + input_free_device(wdata->extension.input); + wdata->extension.input = NULL; + return ret; +} + +static void wiimod_nunchuk_remove(const struct wiimod_ops *ops, + struct wiimote_data *wdata) +{ + if (!wdata->extension.input) + return; + + input_unregister_device(wdata->extension.input); + wdata->extension.input = NULL; +} + +static const struct wiimod_ops wiimod_nunchuk = { + .flags = 0, + .arg = 0, + .probe = wiimod_nunchuk_probe, + .remove = wiimod_nunchuk_remove, + .in_ext = wiimod_nunchuk_in_ext, +}; + +/* + * Classic Controller + * Another official extension from Nintendo. It provides a classic + * gamecube-like controller that can be hotplugged on the Wii Remote. + * It has several hardware buttons and switches that are all reported via + * a normal extension device. + */ + +enum wiimod_classic_keys { + WIIMOD_CLASSIC_KEY_A, + WIIMOD_CLASSIC_KEY_B, + WIIMOD_CLASSIC_KEY_X, + WIIMOD_CLASSIC_KEY_Y, + WIIMOD_CLASSIC_KEY_ZL, + WIIMOD_CLASSIC_KEY_ZR, + WIIMOD_CLASSIC_KEY_PLUS, + WIIMOD_CLASSIC_KEY_MINUS, + WIIMOD_CLASSIC_KEY_HOME, + WIIMOD_CLASSIC_KEY_LEFT, + WIIMOD_CLASSIC_KEY_RIGHT, + WIIMOD_CLASSIC_KEY_UP, + WIIMOD_CLASSIC_KEY_DOWN, + WIIMOD_CLASSIC_KEY_LT, + WIIMOD_CLASSIC_KEY_RT, + WIIMOD_CLASSIC_KEY_NUM, +}; + +static const __u16 wiimod_classic_map[] = { + BTN_A, /* WIIMOD_CLASSIC_KEY_A */ + BTN_B, /* WIIMOD_CLASSIC_KEY_B */ + BTN_X, /* WIIMOD_CLASSIC_KEY_X */ + BTN_Y, /* WIIMOD_CLASSIC_KEY_Y */ + BTN_TL2, /* WIIMOD_CLASSIC_KEY_ZL */ + BTN_TR2, /* WIIMOD_CLASSIC_KEY_ZR */ + KEY_NEXT, /* WIIMOD_CLASSIC_KEY_PLUS */ + KEY_PREVIOUS, /* WIIMOD_CLASSIC_KEY_MINUS */ + BTN_MODE, /* WIIMOD_CLASSIC_KEY_HOME */ + KEY_LEFT, /* WIIMOD_CLASSIC_KEY_LEFT */ + KEY_RIGHT, /* WIIMOD_CLASSIC_KEY_RIGHT */ + KEY_UP, /* WIIMOD_CLASSIC_KEY_UP */ + KEY_DOWN, /* WIIMOD_CLASSIC_KEY_DOWN */ + BTN_TL, /* WIIMOD_CLASSIC_KEY_LT */ + BTN_TR, /* WIIMOD_CLASSIC_KEY_RT */ +}; + +static void wiimod_classic_in_ext(struct wiimote_data *wdata, const __u8 *ext) +{ + __s8 rx, ry, lx, ly, lt, rt; + + /* Byte | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | + * -----+-----+-----+-----+-----+-----+-----+-----+-----+ + * 1 | RX <5:4> | LX <5:0> | + * 2 | RX <3:2> | LY <5:0> | + * -----+-----+-----+-----+-----------------------------+ + * 3 |RX<1>| LT <5:4> | RY <5:1> | + * -----+-----+-----------+-----------------------------+ + * 4 | LT <3:1> | RT <5:1> | + * -----+-----+-----+-----+-----+-----+-----+-----+-----+ + * 5 | BDR | BDD | BLT | B- | BH | B+ | BRT | 1 | + * -----+-----+-----+-----+-----+-----+-----+-----+-----+ + * 6 | BZL | BB | BY | BA | BX | BZR | BDL | BDU | + * -----+-----+-----+-----+-----+-----+-----+-----+-----+ + * All buttons are 0 if pressed + * RX and RY are right analog stick + * LX and LY are left analog stick + * LT is left trigger, RT is right trigger + * BLT is 0 if left trigger is fully pressed + * BRT is 0 if right trigger is fully pressed + * BDR, BDD, BDL, BDU form the D-Pad with right, down, left, up buttons + * BZL is left Z button and BZR is right Z button + * B-, BH, B+ are +, HOME and - buttons + * BB, BY, BA, BX are A, B, X, Y buttons + * LSB of RX, RY, LT, and RT are not transmitted and always 0. + * + * With motionp enabled it changes slightly to this: + * Byte | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | + * -----+-----+-----+-----+-----+-----+-----+-----+-----+ + * 1 | RX <5:4> | LX <5:1> | BDU | + * 2 | RX <3:2> | LY <5:1> | BDL | + * -----+-----+-----+-----+-----------------------+-----+ + * 3 |RX<1>| LT <5:4> | RY <5:1> | + * -----+-----+-----------+-----------------------------+ + * 4 | LT <3:1> | RT <5:1> | + * -----+-----+-----+-----+-----+-----+-----+-----+-----+ + * 5 | BDR | BDD | BLT | B- | BH | B+ | BRT | EXT | + * -----+-----+-----+-----+-----+-----+-----+-----+-----+ + * 6 | BZL | BB | BY | BA | BX | BZR | 0 | 0 | + * -----+-----+-----+-----+-----+-----+-----+-----+-----+ + * Only the LSBs of LX and LY are lost. BDU and BDL are moved, the rest + * is the same as before. + */ + + if (wdata->state.flags & WIIPROTO_FLAG_MP_ACTIVE) { + lx = ext[0] & 0x3e; + ly = ext[1] & 0x3e; + } else { + lx = ext[0] & 0x3f; + ly = ext[1] & 0x3f; + } + + rx = (ext[0] >> 3) & 0x18; + rx |= (ext[1] >> 5) & 0x06; + rx |= (ext[2] >> 7) & 0x01; + ry = ext[2] & 0x1f; + + rt = ext[3] & 0x1f; + lt = (ext[2] >> 2) & 0x18; + lt |= (ext[3] >> 5) & 0x07; + + rx <<= 1; + ry <<= 1; + rt <<= 1; + lt <<= 1; + + input_report_abs(wdata->extension.input, ABS_HAT1X, lx - 0x20); + input_report_abs(wdata->extension.input, ABS_HAT1Y, ly - 0x20); + input_report_abs(wdata->extension.input, ABS_HAT2X, rx - 0x20); + input_report_abs(wdata->extension.input, ABS_HAT2Y, ry - 0x20); + input_report_abs(wdata->extension.input, ABS_HAT3X, rt); + input_report_abs(wdata->extension.input, ABS_HAT3Y, lt); + + input_report_key(wdata->extension.input, + wiimod_classic_map[WIIMOD_CLASSIC_KEY_RIGHT], + !(ext[4] & 0x80)); + input_report_key(wdata->extension.input, + wiimod_classic_map[WIIMOD_CLASSIC_KEY_DOWN], + !(ext[4] & 0x40)); + input_report_key(wdata->extension.input, + wiimod_classic_map[WIIMOD_CLASSIC_KEY_LT], + !(ext[4] & 0x20)); + input_report_key(wdata->extension.input, + wiimod_classic_map[WIIMOD_CLASSIC_KEY_MINUS], + ! |